/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.jena.sparql.expr.nodevalue;

import java.math.BigDecimal;
import java.math.BigInteger;

import org.apache.jena.datatypes.xsd.XSDDatatype;
import org.apache.jena.graph.Node;
import org.apache.jena.graph.NodeFactory;
import org.apache.jena.sparql.expr.NodeValue;


public class NodeValueInteger extends NodeValue
{
    //long integer = Integer.MIN_VALUE;
    // The performance impact of this seems to be very low
    // After all, much of the work is pattern matching.
    BigInteger integer;

    public NodeValueInteger(BigInteger i)         { super(); integer = i; }
    public NodeValueInteger(BigInteger i, Node n) { super(n); integer = i; }
//   public NodeValueInteger(long i, Node n)       { super(n); integer = new BigInteger(Long.toString(i)); }
    public NodeValueInteger(long i)               { super(); integer = new BigInteger(Long.toString(i)); }

    @Override
    public boolean isNumber() { return true; }
    @Override
    public boolean isInteger() { return true; }
    @Override
    public boolean isDecimal() { return true; }
    @Override
    public boolean isFloat()  { return true; }
    @Override
    public boolean isDouble() { return true; }

    @Override
    public BigInteger  getInteger()   { return integer; }
    @Override
    public double getDouble()  { return integer.doubleValue(); }
    @Override
    public float  getFloat()   { return integer.floatValue(); }
    @Override
    public BigDecimal getDecimal()  { return new BigDecimal(integer); }

    @Override
    protected Node makeNode()
    { return NodeFactory.createLiteralDT(integer.toString(), XSDDatatype.XSDinteger); }

    @Override
    public String asString() { return toString(); }

    @Override
    public String toString() {
        // Preserve lexical form
        if ( getNode() != null )
            return super.asString();
        return integer.toString();
    }

    @Override
    public void visit(NodeValueVisitor visitor) { visitor.visit(this); }
}
